Toilet device

ABSTRACT

This toilet device has a water supply portion configured to supply flush water to a toilet bowl, a vacuum breaker provided in the water supply portion; and a connection pipe connected to the vacuum breaker, wherein the connection pipe is configured to drain the water overflowing from the vacuum breaker when malfunction occurs in the vacuum breaker as a drainage channel, and the connection pipe is configured to prevent backflow of sewage in the toilet bowl as a suction channel at the time of applying negative pressure.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority of Japanese Application No. 2019-188533, filed Oct. 15, 2019, the entire contents of which are incorporated herein by reference.

FIELD OF THE DISCLOSURE

The present disclosure relates to a toilet device.

BACKGROUND OF THE DISCLOSURE

Conventionally, a toilet device has a vacuum breaker configured to prevent the backflow of the flush water. The vacuum breaker has a water-receiving portion configured to receive the flush water overflowing from the atmospheric introducing portion. The flush water accumulating in the water-receiving portion is drained to the tank side from a drainage port formed on a bottom surface of the water-receiving portion.

SUMMARY OF THE DISCLOSURE

However, according to the toilet device disclosed in Japanese Unexamined Patent Application, First Publication No. 2014-190489, at the time when the malfunction occurs in the vacuum breaker and the amount of the overflowing flush water is too much, it is possible that the flush water spills over and fall from an side-wall portion standing up from an edge portion of the bottom surface of the water-receiving portion such that the flush water may leak.

The present disclosure is configured in consideration of the foregoing circumstances that an object of the present disclosure is to provide a toilet device configured to prevent the leakage of the flush water when the malfunction occurs in the vacuum breaker.

In order to achieve the object described above, the present disclosure provides the following means.

That is, the toilet device according to the present disclosure has a water supply portion configured to supply flush water to a toilet bowl, a vacuum breaker provided in the water supply portion, and a connection pipe connected to the vacuum breaker, characterized in that the connection pipe is configured to drain the water overflowing from the vacuum breaker when malfunction occurs in the vacuum breaker as a drainage channel, and the connection pipe is configured to prevent backflow of sewage in the toilet bowl as a suction channel at the time of applying negative pressure.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a perspective view showing a toilet device, according to some embodiments;

FIG. 2 is a perspective view showing a state of detaching a toilet bowl body and the like from the toilet device shown in FIG. 1, according to some embodiments;

FIG. 3 is a side view showing the state of detaching the toilet bowl body and the like from the toilet device shown in FIG. 1, according to some embodiments;

FIG. 4 is an enlarged view of an upper part of FIG. 1, according to some embodiments;

FIG. 5 is a perspective view of the toilet device with part of the vacuum breaker and the connection pipe being broken, according to some embodiments;

FIG. 6 is a perspective view showing the vacuum breaker and the connection pipe of the toilet device, according to some embodiments;

FIG. 7 is a top view showing a part of the toilet device where the connection pipe is provided, according to some embodiments; and

FIG. 8 is a partial cross-sectional view of a part of a water supply pipe and an upper auxiliary flush water tank of the toilet device, according to some embodiments.

DETAILED DESCRIPTION OF THE DISCLOSURE

Hereinafter, a toilet device according to some embodiments of the present disclosure will be described.

FIG. 1 is a perspective view showing the toilet device according to some embodiments of the present disclosure. In FIG. 1, part of the configuration elements of the toilet device is not shown.

As shown in FIG. 1, a toilet device 100 has a toilet bowl body 1, a toilet seat (not shown), a toilet lid (not shown), a functional portion 2, and a cover (not shown). The functional portion 2 is configured to realize variable functions such as water supply, water pooling, flush, and the like. The cover is configured to cover the functional portion 2. The above-described toilet bowl body 1 is an example of a toilet. The above-described functional portion 2 is an example of a water supply portion.

Hereinafter, in the description of the toilet device 100, a “front side” is defined as a direction facing forward in a state when a user sits on the toilet seat, a “rear side” is defined as a direction of opposite side thereof, and a forward-reward direction is defined as a direction connecting the front side and the rear side. Also, a “left side” is defined as a left side as seen from the user sitting on the toilet seat, a “right side” is defined as a right side as seen from the user, and left-right side is defined as a direction connecting the left side and the right side.

A toilet bowl 11 recessing downward is formed in the toilet bowl body 1. The toilet bowl 11 is connected to a drainage pipe (not shown) provided on the floor.

FIG. 2 is a perspective view showing a state of detaching the toilet bowl body 1 and the like from the toilet device 100 shown in FIG. 1.

As shown in FIG. 2, the functional portion 2 has a toilet flush water tank 20, a booster pump unit 30 (hereinafter, see FIG. 3), and a water supply mechanism 40. The above-described toilet flush water tank 20 is an example of a receiving portion.

The toilet flush water tank 20 has a main flush water tank 21 and an auxiliary flush water tank 23. The toilet flush water tank 20 is configured to pool the flush water.

The main flush water tank 21 is disposed in a space between the floor and the toilet bowl 11. An outer surface of a lower portion of the pooled water portion (not shown) of the toilet bowl 11 is formed in a shape protruding downward. An upper surface of the main flush water tank 21 is formed to have a concave portion corresponding to the outer surface of the lower portion of the pooled water portion.

The auxiliary flush water tank 23 is disposed on the upper side of the main flush water tank 21. The auxiliary flush water tank 23 is configured to communicate with the main flush water tank 21.

FIG. 3 is a side view (view seen from the right side) showing a state when the toilet bowl body 1 and the like are detached from the toilet device 100 shown in FIG. 1.

The booster pump unit 30 is configured to have a built-in pump unit (not shown). As shown in FIG. 3, the booster pump unit 30 is disposed above the main flush water tank 21.

A suction port of the booster pump unit 30 is connected with the main flush water tank 21 by a pipe (not shown). A drain port of the booster pump unit 30 is connected with a flush water supply pipe 32. The booster pump unit 30 is configured to suck the flush water in the main flush water tank 21 and send the flush water to the flush water supply pipe 32.

As shown in FIG. 2, the downstream side of the flush water supply pipe 32 is branched into a first rim water supply pipe 33 and a second rim water supply pipe 34. The downstream side of the first rim water supply pipe 33 and the downstream side of the second rim water supply pipe 34 are connected with a first rim drain port 33 a and a second rim drain port 34 a respectively.

The second rim water supply pipe 34 is connected with a pipe 35 that is connected with the auxiliary flush water tank 23.

The first rim drain port 33 a and the second rim drain port 34 a are connected to the drain port 12 a, 12 b (see FIG. 1) at the left side and the right side of the toilet bowl 11 via the drain flow passage 13 a, 13 b (see FIG. 1), respectively.

FIG. 4 is an enlarged view of the upper portion of FIG. 1. As shown in FIG. 4, the water supply mechanism 40 has a toilet bowl flush portion 40A and a foam washing portion 50A.

The toilet bowl flush portion 40A has a first water supply pipe 41 and a water supply valve 41 a.

A first end portion of the first water supply pipe 41 is connected to a first end portion of the water supply valve 41 a. A second end portion of the water supply valve 41 a is connected to the water supply main pipe 42 (hereinafter see FIG. 6). A water supply pipe drain port 43 (hereinafter see FIG. 6) is disposed at a second end portion i.e., end portion at the downstream side, of the first water supply pipe 41. The water supply pipe drain port 43 is disposed to face the auxiliary flush water tank 23. The water supplied from the water supply main pipe 42 is supplied via the first water supply pipe 41 to the auxiliary flush water tank 23 via the water supply pipe drain port 43.

The foam washing portion 50A has a foam valve 50 a, a vacuum breaker 50, a vacuum breaker connection pipe 51 a and a connection pipe 60.

The foam valve 50 a is disposed at a branch pipe 49 which is branched from the water supply valve 41 a.

The vacuum breaker 50 is disposed above the foam valve 50 a.

FIG. 5 is a perspective view with part of the vacuum breaker 50 and the connection pipe 60 being broken.

As shown in FIG. 5, the vacuum breaker 50 has a main body portion 52 and a vacuum breaker segment (vacuum breaker disc holder) 53

The main body portion 52 is formed to have a cylindrical shape with the vertical direction as the axial direction. An annular portion 52 a formed in an annular shape in a planar view is disposed in the inner side of the lower portion of the main body portion 52. A flange portion 52 b protruding outward in the radial direction is disposed in the upper portion of the main body portion 52

A protruding annular portion 52 c formed to have an annular shape in a planar view and to protrude upward is disposed in the annular portion 52 a. A concave portion 52 d recessed downward is formed in the protruding annular portion 52 c.

The vacuum breaker segment 53 is disposed in the main body portion 52 to be movable along the vertical direction. The vacuum breaker segment 53 has a valve body portion 54 and a shaft (not shown). The vacuum breaker body portion 54 is formed in a substantial disk shape in a planar view. The shaft is formed to extend upward from the center of the valve body portion 54. The shaft is inserted into a guide tubular portion 62 c of the connection pipe 60 described later. The gaskets 56 a, 56 b are disposed at the top and bottom of the valve body portion 54 respectively.

As shown in FIG. 4, the vacuum breaker connection pipe 51 a is connected with the upper portion of the vacuum breaker 50. A second water supply pipe 51 b (hereinafter see FIG. 2) is connected to the downstream side of the vacuum breaker connection pipe 51 a.

In the foam washing portion 50A, the water supplied from the water supply main pipe 42 passes through the foam valve 50 a and the vacuum breaker 50 and flows to the vacuum breaker connection pipe 51 a. In an ejector (not shown), the water is mixed with the air and detergent to become to a foam state, the water flows through the second water supply pipe 51 b, and the water is drained from the second rim drain port 34 a as foam washing water.

The connection pipe 60 is configured to connect the auxiliary flush water tank 23 (hereinafter see FIG. 2) and the vacuum breaker 50. The connection pipe 60 has a first connection pipe portion 61 and a second connection pipe portion 66. The first connection pipe portion 61 communicates with the second connection pipe portion 66.

The first connection pipe portion 61 has a first vertical pipe portion 62 and a first horizontal pipe portion 63. The first vertical pipe portion 62 and the first horizontal pipe portion 63 are integrally formed.

The first vertical pipe portion 62 is formed in a tubular shape with the vertical direction as the axial direction. A protruding annular portion 62 a protruding downward is formed in the bottom portion of the first vertical pipe portion 62. The protruding annular portion 62 a is formed in an annular shape in a planar view.

In the first vertical pipe portion 62, a flange portion 62 b protruding outward in the radial direction is disposed at a position upper than the protruding annular portion 62 a. The flange portion 62 b is screwed to the flange portion 52 b of the main body portion 52 b of the vacuum breaker 50.

A guide tubular portion 62 c is disposed inside the first vertical pipe portion 62. The guide tubular portion 62 c is formed in a tubular shape with the vertical direction as the axial line. A shaft of the vacuum breaker 50 is inserted into the guide tubular portion 62 c so as to be movable in the vertical direction.

The first horizontal pipe portion 63 is formed to extend in the front left direction from an upper end portion of the first vertical pipe portion 62. The first horizontal pipe portion 63 is formed in a tubular shape having the axis extending gradually toward the front side while approaching the left side. A horizontal connection portion 63 a having an enlarged diameter is disposed in an end portion of the first horizontal pipe portion 63 i.e., the end portion at the second connection pipe portion 66.

The second connection pipe portion has a second horizontal pipe portion 67 and a second vertical pipe portion 68. The second horizontal pipe portion 67 and the second vertical pipe portion 68 is integrally formed.

The second horizontal pipe portion 67 extends in the front left direction. The second horizontal pipe portion 67 is formed in a tubular shape having the axis extending gradually toward the front side while approaching the left side. An end portion of the second horizontal pipe portion 67, i.e., the end portion at the first connection pipe side, fits in the horizontal connection portion 63 a of the first horizontal pipe portion 63.

FIG. 6 is a perspective view of the vacuum breaker 50 and the connection pipe 60.

As shown in FIG. 6, the second vertical pipe portion 68 is disposed at the outer circumference side of the second horizontal pipe portion 67. The second vertical pipe portion 68 is formed to extend downward from the left end portion of the second horizontal pipe portion 67. The second vertical pipe portion 68 is formed in a tubular shape having an axis along the vertical direction.

The second vertical pipe portion 68 is formed in a shape having a broad width in the left-right direction. In the bottom portion of the second vertical pipe portion 68, an end portion opening 69 is formed to open downward. The end portion opening 69 may open in the horizontal direction.

The end portion opening 69 is formed to have a tapered surface 69 a gradually toward the middle side in a planar view while approaching downward.

FIG. 7 is a top view showing the part where the connection pipe 60 is disposed.

As shown in FIG. 7, an upper opening 23 h which opens in the vertical direction is formed at the upper surface 23 u of the auxiliary flush water tank 23. In the planar view, an end portion opening 69 of the connection pipe 60 (hereinafter see FIG. 6) is disposed in the upper opening 23 h of the auxiliary flush water tank 23. As shown in FIG. 4, the end portion opening 69 of the connection pipe 60 is disposed below the upper surface 23 u of the auxiliary flush water tank 23. In other words, the end portion opening 69 of the connection pipe 60 is disposed in the upper opening 23 h of the auxiliary flush water tank 23.

FIG. 8 is a partial cross-sectional view along the forward-reward direction of the first water supply pipe 41 and the auxiliary flush water tank 23.

As shown in FIG. 8, an inclined plate portion 43 a is disposed in the lower part of the back portion of the water supply pipe drain port 43 disposed in the end portion of the first water supply pipe 41. The inclined plate portion 43 a is disposed downward gradually while approaching the front side.

A partition plate portion 23 a is disposed in the middle of the auxiliary flush water tank 23 along the forward-reward direction. The partition plate 23 a is formed in a plate shape. A plate surface of the partition plate 23 a is formed to face the forward-reward direction. The partition plate 23 a is disposed in the front with respect to the water supply pipe drain port 43 of the first water supply pipe 41.

At the time of supplying water (normal time), the vacuum breaker segment 53 is positioned in the upper position and the gasket 56 a contacts with the protruding annular portion 62 a of the connection pipe 60 so as to seal a space between the vacuum breaker 53 and the connection pipe 60.

When the water supply is stopped, the vacuum breaker segment 53 moves downward due to the gravity, and the gasket 56 b engages with the annular portion 52 a of the main body portion 52.

When the negative pressure is generated, the air is sucked from the end portion opening 69 of the connection pipe 60 and the air flows from the side of auxiliary flush water tank 23 toward the side of the vacuum breaker 50. The connection pipe 60 functions as the air suction channel. The air passes the concave portion 52 d of the main body portion 52 of the vacuum breaker 50 to move further downward. The backflow of the sewage in the toilet bowl body 1 is prevented.

When a space between the vacuum breaker segment 53 and the first vertical pipe portion 62 is not properly sealed due to the malfunction occurring in the vacuum breaker 50, the flush water flows in the connection pipe 60. The flush water flowing therein is drained from the end portion opening 69 of the connection pipe 60 to the auxiliary flush water tank 23, i.e., the auxiliary flush water tank 23 receives the flush water flowing therein. The connection pipe 60 functions as the water drainage channel.

According to the toilet device 100 having the above-described configuration, at the time when the malfunction occurs in the vacuum breaker 50, the flush water flowing from the vacuum breaker 50 flows through the connection pipe 60 to the side of the auxiliary flush water tank 23 and the flush water is drained from the end portion opening 69 of the connection pipe 60 to the auxiliary flush water tank 23. Accordingly, the leak of the flush water can be prevented.

At the time when the negative pressure is generated, an inside of the connection pipe 60 functions as the air suction channel through which the air flows from the side of the auxiliary flush water tank 23 to the vacuum breaker 50. Accordingly, the air suction channel can be utilized as the water drainage channel configured to drain the flush water at the time when the malfunction occurring in the vacuum breaker 50, it is not necessary to configure the water drainage channel separately, thereby the number of the elements can be reduced.

At the time when the negative pressure is generated, the air is sucked from the end portion opening 69 of the connection pipe 60, and at the time when the malfunction occurs in the vacuum breaker 50, the flush water is drained from the end portion opening 69 of the connection pipe 60. Accordingly, since the end portion opening 69 of the connection pipe 60 is configured to perform both functions of the suction of the air and the drain of the flush water, it is not necessary to separately configure the opening for the suction of the air and the opening of the drain of the flush water, thereby the number of elements can be reduced.

Since the end portion opening 69 of the connection pipe 60 opens downward, when the malfunction occurs in the vacuum breaker 50, the flush water flowing through the connection pipe 60 can be definitely drained from the end portion opening 69 of the connection pipe 60 to the auxiliary flush water tank 23.

The tapered surface 69 a is formed to be gradually toward the middle side in a planar view while approaching downward in the end portion opening 69 of the connection pipe 60. Accordingly, in the construction site, after installing the auxiliary flush water tank 23, at the time of installing the connection pipe 60 and disposing the end portion opening 69 of the connection pipe 60 in the upper opening 23 h of the auxiliary flush water tank 23, since the tapered surface 69 a is formed at the end portion opening 69 of the connection pipe 60, it is possible to prevent the end portion opening 69 of the connection pipe 60 from interfering the circumference of the upper opening 23 h of the auxiliary flush water tank 23 so as to appropriately dispose the end portion opening 69 of the connection pipe 60 in the upper opening 23 h of the auxiliary flush water tank 23.

The inclined plate portion 43 a is disposed toward downward gradually while approaching the front side under the water supply pipe drain port 43 disposed in the first water supply pipe 41. As shown by the two-dot chain line in FIG. 8, the flush water W supplied from the water supply pipe drain port 43 is drained in the diagonally forward direction along the inclined plate portion 43 a to flow downward along the partition plate portion 23 a and drained into the auxiliary flush water tank 23. Accordingly, the flow of the flush water is straightened by supplying the flush water while hitting the flush water to the partition plate portion 23 a and the water film is not formed in the auxiliary flush water tank 23, thereby the water supply can be smoothly performed.

At the time of water supply, the air is drained upward in a space S1 in the front of the partition plate portion 23 a in the auxiliary flush water tank 23. Accordingly, since a space S2 in a rear side of the partition plate portion 23 a functions as the water supply channel and the space S1 in the front side of the partition plate portion 23 a functions as the air suction channel, it is possible to suppress the generation of the abnormal noise in the auxiliary flush water tank 23.

Hereinabove, the various shapes and combinations of each configuration element disclosed in some of the above-described embodiments are described as examples, however, various changes with respect to each of the configuration elements within a range not departing from the gist of the present disclosure are possible.

In some of the above-described embodiments, the vacuum breaker is disposed in the form flush portion 50A, however, the vacuum breaker may be disclosed in the toilet bowl flush portion 40A. 

1. A toilet device, comprising: a water supply portion configured to supply flush water to a toilet bowl; a vacuum breaker provided in the water supply portion; and a connection pipe connected to the vacuum breaker, wherein the connection pipe is configured to drain the water overflowing from the vacuum breaker when malfunction occurs in the vacuum breaker as a drainage channel, and the connection pipe is configured to prevent backflow of sewage in the toilet bowl as a suction channel at the time of applying negative pressure.
 2. The toilet device of claim 1, wherein an end portion opening is formed at an end portion of the connection pipe disposed at an opposite side of the vacuum breaker side, wherein when the malfunction occurs in the vacuum breaker, the water overflowing from the vacuum breaker is drained from the end portion opening, and wherein at the time of applying negative pressure, air is sucked through the end portion opening.
 3. The toilet device of claim 2, wherein the end portion opening is formed to face downward or a horizontal direction.
 4. The toilet device of claim 2, comprising a receiving portion configured to receive the water drained from the end portion opening.
 5. The toilet device of claim 3, comprising a receiving portion configured to receive the water drained from the end portion opening.
 6. The toilet device of claim 4, wherein the toilet bowl is connected to the receiving portion and the water flowing through the receiving portion is drained to the toilet bowl.
 7. The toilet device of claim 5, wherein the toilet bowl is connected to the receiving portion and the water flowing through the receiving portion is drained to the toilet bowl. 